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Borazon is the third hardest substance that is artificially produced, preceded by aggregated diamond nanorods and man-made diamonds, respectively. Borazon is a crystal created by heating equal quantities of boron and nitrogen at temperatures greater than 1800 °C (3300 °F) at 7 GPa (1 million lbf/in²). Borazon is the only substance that can scratch a diamond. A diamond will also scratch Borazon. Aggregated diamond nanorods, or ADNRs, are an allotrope of carbon believed to be the least compressible material known to man, as measured by its isothermal bulk modulus; aggregated diamond nanorods have a modulus of 491 gigapascals (GPa), while conventional diamond has a modulus of 442 GPa. ...
Jump to: navigation, search A scattering of round-brilliant cut diamonds shows off the many reflecting facets. ...
Quartz crystal A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ...
General Name, Symbol, Number boron, B, 5 Chemical series metalloids Group, Period, Block 13, 2, p Appearance black Atomic mass 10. ...
Jump to: navigation, search General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ...
The degree Celsius (°C or ℃ (Unicode 0x2103)) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ...
Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724. ...
The gigapascal, symbol GPa is an SI unit of pressure. ...
One million (1000000), one thousand thousand, is the natural number following 999999 and preceding 1000001. ...
Pounds-force per square inch (lbf/in²) is a non-SI unit of pressure. ...
Borazon was first produced in 1957 by Robert H. Wentorf, Jr., a physical chemist for the General Electric Company. In 1969, General Electric espoused the name Borazon as their trademark for the crystal. Jump to: navigation, search 1957 was a common year starting on Tuesday of the Gregorian calendar. ...
Look up chemist on Wiktionary, the free dictionary. ...
The General Electric Company, or GE, (NYSE: GE) is a multinational technology and services company. ...
Jump to: navigation, search 1969 was a common year starting on Wednesday For other uses, see Number 1969. ...
A trademark (Commonwealth English: trade mark)[1] is a distinctive sign of some kind which is used by a business to identify itself and its products and services to consumers, and to set the business and its products or services apart from those of other businesses. ...
Production
Borazon is used in industrial applications to shape tools as it can withstand temperatures greater than 2000 °C (3500 °F), much higher than that of a pure diamond at 871 °C (1600 °F). Other uses include jewellery designing, glass cutting and laceration of diamonds. Jump to: navigation, search Jewellery (Jewelry in American spelling); consists of ornamental devices worn by persons, typically made with gems and precious metals. ...
Jump to: navigation, search The materials definition of a glass is a uniform amorphous solid material, usually produced when a suitably viscous molten material cools very rapidly to below its glass transition temperature, thereby not giving enough time for a regular crystal lattice to form. ...
It was produced by GE Superabrasives a unit of GE Specialty Materials until the unit was sold to Littlejohn & Co. in December 2003.
See also An abrasive is a usually rough object that is used to smooth another through extensive rubbing. ...
Boron nitride is a binary chemical compound, consisting of equal proportions of boron and nitrogen, with formula BN. Structurally, it is isoelectronic to carbon and takes on similar physical forms: a graphite-like one, and a diamond-like one. ...
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